Inner meaning of Brahmin wearing sacred Thread

3. Then to this realized person reality (i.e. true wisdom) constitutes the inner tuft and sacred thread. To the Brahmana desirous of liberation is (allowed) the state of the inward tuft and sacred thread. The wearing of externally visible tuft and sacred thread (is necessary) for the householders engaged in rituals. The characteristic of the inward sacred thread is not clearly visible like external thread; it is the union with reality inwardly.